HELP!!!!!!!!!!!!!!!!!!!
BlitzMax Forums/BlitzMax Beginners Area/HELP!!!!!!!!!!!!!!!!!!!
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| file=ReadFile(filename$) Length=ReadInt(file) StringTest1$=ReadString(file,Length) CloseFile(file) I get a error ever time I use int to define Length of string |
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| Oh dear. See here and here for more information. |
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| Could an moderator please moderate... (join the 3 threads ... or lock the "unused" ones). bye Ron |
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You've asked a few times now Caton. I guess you're not getting what you want. See if this helps:Strict Local fp:TStream,t$,f$="data.txt" ' f$ is name of file to read fp=ReadStream(f$) ' you must assign a TSTREAM before reading a file t$=LoadString(fp) ' read entire file into t$ Print Len(t$) ' print length of it Print t$ ' print entire contents of it CloseStream fp ' close your file stream when done End ' exit |
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Firstly ReadInt returns 4 bytes from the stream as a Int value, what you probably want is StreamSize this gives you the filesize, then it works.' caton.bmx filename$="caton2.bmx" file:TStream=ReadFile(filename$) Length%=StreamSize(file) StringTest1$=ReadString(file,Length) DebugLog Length DebugLog StringTest1 CloseFile(file) Contents of text file. hello world this is a test |
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dw817, if you actually read his code, you'd have seen this:Length=ReadInt(file) which implies that he has an Int followed by a string in the file. The int value signifies the length of the following text. Presumably it is some kind of custom file format (see other of his previous posts also in the Blitz3D section). ReadFile returns a TStream object. Since he appears to ignore replies to the other posts, one expects the same outcome here. |
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| Hi Brucey. I cut to what it appeared he wanted and skipped over the fact ReadInt was being used incorrectly. When I tutored in the past, I would do that with students sometimes and made greater headway than trying to explain what they did wrong. If they brought it back up and there was no simple solution to use a different approach, then I would explain that command to them. But yes, ReadInt will read 4-characters of the open file and convert it to a number, NOT the length of the file. It's essentially your CVS($) routine from BASIC, in this case read from a file and not a string variable. http://www.antonis.de/qbebooks/gwbasman/cvi.html And yes, it is hoped something can be learned from a working solution. :) |
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| You can't really just make sweeping assumptions as to what you *think* someone wants to do. I refer you to Floyd's post (#2) here, in which he discusses Blitz3D's string storage, from which Caton appears to be trying to read from in BlitzMax... At the end of the day, I'm pretty sure he's just having a laugh, as all these "help" posts appear to be subsequently ignored by the author. |
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Well you can't make sweeping assumptions about my sweeping assumptions either. :) In fact, no-one is allowed that unique privilege, not unless they are from planet Corinia. Knowledge is power ... it grows like a flooow-oowww-eerr ! |
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| I get a error ever time I use int to define Length of string Why do you need to use an Int for defining length? Use ReadLine and WriteLine, let BlitzMax handle string length itself. By using those two functions you can read and write any string you want, regardless of size. The resulting file will be human-readable as well, which is a positive point. |
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| Why do you need to use an Int for defining length? Probably because that's what Blitz3D does. @dw817 I've never understood the point of posting images/videos as a reply to something, other than trying to be clever or cool, or in an attempt to distract - for whatever reason. |
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| Brucey, sometimes you just gotta let it out. And yes, here is another. YOUR ARGUMENT IS INVALID What am I listening to ? MUSIC. Don't worry, I'll post some new source soon. I'm still fighting the infernal gadgets from MAXGUI in my Carryall project. I think in the future I'll write my own GUI like S2 has. Usually if I have a question about coding now, I Google it, and trace it back to BlitzBASIC.com. That's why I haven't asked any questions of late. |
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| I still get sucked into trying to answer these questions even though I know it is futile. There's never enough information. This thread starts with a code fragment and "I get a error...". What error? What was expected that didn't happen? What value did Length=ReadInt(file) produce? Does it look reasonable? And we can't try the code ourselves. It is using a file we don't have. My guess about the current problem is that the first four bytes are supposed to contain the length of a string to be read but actually do not. Without access to the file this is speculation. |
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| I'm still processing the fact that ReadFile returns a TStream object and he's putting that value in an Int. |
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| That is because it does not use "strict" (or "superstrict") save as nonstrict.bmx
Framework Brl.StandardIO
Import Brl.Stream
Import Brl.Reflection
local f = ReadStream("nonstrict.bmx")
local t:TTypeID = TTypeID.ForObject(f)
if t
print t.name() 'prints "TCStream"
else
print "unknown type"
endif
bye Ron |
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